QUOTE(abayer1969 @ Aug 1 2010, 04:34 PM)
Ok I need some help here.
My tires are 165.65.15 I cannot find them anywhere. Yes I have gone to Tire Rack and I got nothing. What size will fit as a replacement tire?
If they are, then somebody put a goof-ball 165/
65R15 size on it.
They were originally from the factory on your 73 2.0 a 165HR15 Tubeless tire - which in today's terminology would be 165(/80)R15 ##H (the /80 is 80% profile size & not usually shown but assumed).
Several mfgrs. offer 165SR15 & 165TR15 available through Tire Rack, which you can use on your 914 for DD use if you aren't trying to keep it original/CW, in the $30-100 range (Kumho, Yoko's, Michi., Conti., etc. ad naseum). The only difficulty is the period correct & spec correct 165
HR15 (TR is speed correct, but wasn't available back in the day to be spec'd.)..
Lucas, Coker, etc. can get you a correct 165HR15 Vredestein Classic (Sprint+ IIRC) for about $105 each. They can also get you a tube type Michelin XAS 165HR15 for about $250 each, or a period correct upsize XWX 185/70VR15 Tubeless as used for the M470/471 914 options for $400+ each!
Otherwise, use the tire size calculator at the 914 info section above to get the speedo/odometer error for the various "modern" upsizes. 185/75R15 gives the least error, with 185/70R15 next best, then 195/65R15 (at about 3% error IIRC) was the Porsche factory recco'd tire size option when the tire mfgrs. stopped making the 165HR15 tires back in the 80's. All of the other non-stock modern tire sizes which folks are suggesting above (195, 205, etc. will give you a significant speedo/odo error at or more than the 195/65/R15's, as well as anythng over 165 will give you less fuel economy if that's important.
It's your choice, but you can still get a decent set of 4 Bridgestone or Kumho in 165TR or SR15 for $160+/- mounted!
Oh! ....... and ....
BTW - I see Dept. of the Army & NY, so if you're at West Point, I have a nephew in 4th year this coming term!
PS - just noticed you've got Mahle wheels, so if you're doing a concours resto on your 73 2.0, then you'll want to sell those & find a set of 5 Fuchs 2L Alloys to go on it (same 15x5.5J rim size both Mahle & Fuchs should be in part no. ending ....-01 for the hub-centric/self-centering hubs - look in cupped areas on back of wheels). If just a driver for fun resto, then use the Mahles if you like them, or whatever wheels you prefer!